拓扑
R1 aaa 配置
aaa
local-user zhangsan privilege level 3 password cipher 123
local-user zhangsan service-type telnet
R1 ACL配置
acl number 3001
rule 5 deny tcp source 12.1.1.7 0 destination 12.1.1.1 0 destination-port eq te
lnet
R1 telnet 配置
telnet server enable
user-interface vty 0 4
authentication-mode password
R1 vty 接口引入ACL
[R1-ui-vty0-4]acl 3001 inbound标签：R1,destination,telnet,ACL,12.1,3001,Telnet From： https://blog.51cto.com/u_11726705/6131232